package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private WebSocketServer webSocketServer;


    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //异常情况的处理（收货地址为空、超出配送范围、购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);

        //查询当前用户的购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //构造订单数据
        Orders order = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,order);
        order.setPhone(addressBook.getPhone());
        order.setAddress(addressBook.getDetail());
        order.setConsignee(addressBook.getConsignee());
        order.setNumber(String.valueOf(System.currentTimeMillis()));
        order.setUserId(userId);
        order.setStatus(Orders.PENDING_PAYMENT);
        order.setPayStatus(Orders.UN_PAID);
        order.setOrderTime(LocalDateTime.now());

        //向订单表插入1条数据
        orderMapper.insert(order);

        //订单明细数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(order.getId());
            orderDetailList.add(orderDetail);
        }
        for (OrderDetail orderDetail : orderDetailList) {
            orderDetailMapper.insertBatch(orderDetail);
        }

        //向明细表插入n条数据

        //清理购物车中的数据
        shoppingCartMapper.deleteByUserId(userId);

        //封装返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .orderTime(order.getOrderTime())
                .build();

        return orderSubmitVO;
    }

    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    @Override
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    @Override
    public void paySuccess(String outTradeNo) {
        Long userId = BaseContext.getCurrentId();

        // 根据订单号查询当前用户的订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        Map map = new HashMap();
        map.put("type", 1);//消息类型，1表示来单提醒
        map.put("orderId", orders.getId());
        map.put("content", "订单号：" + outTradeNo);

        //通过WebSocket实现来单提醒，向客户端浏览器推送消息
        webSocketServer.sendToAllClient(JSON.toJSONString(map));


    }

    @Override
    @Transactional
    public PageResult seHisPage(OrdersPageQueryDTO ordersPageQueryDTO) {
        Long userId = BaseContext.getCurrentId();
        ordersPageQueryDTO.setUserId(userId);

        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> pagelists = orderMapper.seHisPage(ordersPageQueryDTO);
        List<OrderVO> list = new ArrayList<>();
        for (Orders pagelist : pagelists) {
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(pagelist,orderVO);
            Long orderId = pagelist.getId();
            List<OrderDetail> orderDetails = orderDetailMapper.getByOdId(orderId);
            orderVO.setOrderDetailList(orderDetails);
            list.add(orderVO);
        }

        PageResult pageResult = new PageResult(pagelists.getTotal(),list);
        return pageResult;
    }

    @Override
    public OrderVO seOrderDetail(Long id) {
        Orders orders = orderMapper.getOdDeId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        List<OrderDetail> orderDetails = orderDetailMapper.getByOdId(id);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    @Override
    public void upOrders(Long id) {
        Integer status = Orders.CANCELLED;
        orderMapper.upOrders(status,id);
    }

    @Override
    public void insOrders(Long id) {
        List<OrderDetail> orderDetails = orderDetailMapper.getByOdId(id);
        for (OrderDetail orderDetail : orderDetails) {
            ShoppingCart shoppingCart = new ShoppingCart();
            Long userId = BaseContext.getCurrentId();
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            BeanUtils.copyProperties(orderDetail,shoppingCart);
            shoppingCartMapper.insert(shoppingCart);
        }
    }

    @Override
    public PageResult pageAdmin(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> orders = orderMapper.selAdminPage(ordersPageQueryDTO);
        List<OrderVO> orderVOS = new ArrayList<>();
        for (Orders order : orders) {
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(order,orderVO);
            Long orderId = order.getId();
            List<OrderDetail> orderDetails = orderDetailMapper.getByOdId(orderId);
            for (OrderDetail orderDetail : orderDetails) {
                String name = orderDetail.getName();
                Integer number = orderDetail.getNumber();
                String str = name+"*"+number+" ";
                orderVO.setOrderDishes(str);
            }
            orderVO.setOrderDetailList(orderDetails);
            orderVOS.add(orderVO);
        }
        PageResult pageResult = new PageResult(orders.getTotal(),orderVOS);
        return pageResult;
    }

    @Override
    public OrderStatisticsVO selStatistics() {
        Integer toBeConfirmed = Orders.TO_BE_CONFIRMED;
        Integer confirmed = Orders.CONFIRMED;
        Integer deliveryInProgress = Orders.DELIVERY_IN_PROGRESS;

        Integer toBe = orderMapper.getCountStatis(toBeConfirmed);
        Integer conf = orderMapper.getCountStatis(confirmed);
        Integer deli = orderMapper.getCountStatis(deliveryInProgress);

        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBe);
        orderStatisticsVO.setConfirmed(conf);
        orderStatisticsVO.setDeliveryInProgress(deli);

        return orderStatisticsVO;
    }

    @Override
    public OrderVO selOrders(Long id) {
        Orders orders = orderMapper.getOdDeId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        List<OrderDetail> orderDetails = orderDetailMapper.getByOdId(id);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    @Override
    public void upOdtatus(OrdersConfirmDTO ordersConfirmDTO) {
        Integer status = Orders.CONFIRMED;
        Long id = ordersConfirmDTO.getId();
        orderMapper.upOrders(status,id);
    }

    @Override
    public void puRejection(OrdersRejectionDTO ordersRejectionDTO) {
        Integer status = Orders.CANCELLED;
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersRejectionDTO,orders);
        orders.setStatus(status);
        orderMapper.updateOrders(orders);
    }

    @Override
    public void upCancel(OrdersCancelDTO ordersCancelDTO) {
        Integer status = Orders.CANCELLED;
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersCancelDTO,orders);
        orders.setStatus(status);
        orderMapper.updateOrders(orders);
    }

    @Override
    public void updeli(long id) {
        Orders orders = new Orders();
        orders.setId(id);
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.updateOrders(orders);
    }

    @Override
    public void upComplete(Long id) {
        Orders orders = new Orders();
        orders.setId(id);
        Integer status = Orders.COMPLETED;
        orders.setStatus(status);
        orderMapper.updateOrders(orders);
    }

    @Override
    public void reminder(Long id) {
        Orders orders = orderMapper.getOdDeId(id);
        if (orders == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //基于WebSocket实现催单
        Map map = new HashMap();
        map.put("type", 2);//2代表用户催单
        map.put("orderId", id);
        map.put("content", "订单号：" + orders.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
}
